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Service bulletin DC_91CD_Train

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10207837
Published by NHTSA2022-03-04
Manufacturer's numberDC_91CD_Train
Manufacturer's date2022-02-01
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

3G Turndown (91CD) Dealer Training

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories, Labels and manuals, Software

Vehicles listed
AUDI A42017, 2018
AUDI A52018
AUDI A5 CABRIOLET2018
AUDI ALLROAD2017 to 2018
AUDI AUDI
AUDI Q52018
AUDI Q72017, 2018
AUDI RS 52018
AUDI S42018
AUDI S52018
AUDI S5 CABRIOLET2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
16V6420002016-09-06. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
A0023822047812_72024-01-04. Service bulletin. This bulletin provides information on how to set up and use the SD Creator for obtaining vehicle software updates via the Mirror Server.
A9023582072005_22024-01-04. Service bulletin. This bulletin provides information for when the error message "CBR1021E: Can't parse Request. (cpngw)" appears when adapting control units, keys, or immobilizer; DTC B201700.
A2723512058831_72023-04-06. Service bulletin. This bulletin contains a software update for DTC P0CA700 or U046900.
A0123452066257_22023-03-06. Service bulletin. This bulletin provides information on a software update for when the MIL light is on accompanied by one of the following DTCs: P013E00, P013F00, P014A00, or P014B00.
A2722452058831_12022-10-05. Service bulletin. This bulletin contains a software update for DTC P0CA700 or U046900.
A7222442048311_62022-07-01. Service bulletin. This bulletin contains a software update to correct an intermittently inoperative seat belt positioner.
A4622332051095_72022-07-01. Service bulletin. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
Dealer 91CD2022-02-04. Service bulletin. AT&T has announced its plan to discontinue its 3G network in the U.S. starting in February 2022. This will impact the Audi connect services in certain 2017-2019 model year Audi vehicles.
A0021552011732122022-01-05. Service bulletin. This bulletin contains general instructions for software updates.
A9621712051239_22021-08-04. Service bulletin. This bulletin contain instructions for addressing issues with the garage door remote and HomeLink.